func parsePriceLevels(minPrice string, maxPrice string, r *maps.NearbySearchRequest) {
	if minPrice != "" {
		r.MinPrice = parsePriceLevel(minPrice)
	}

	if maxPrice != "" {
		r.MaxPrice = parsePriceLevel(minPrice)
	}
}
func parseRankBy(rankBy string, r *maps.NearbySearchRequest) {
	switch rankBy {
	case "prominence":
		r.RankBy = maps.RankByProminence
		return
	case "distance":
		r.RankBy = maps.RankByDistance
		return
	case "":
		return
	default:
		usageAndExit(fmt.Sprintf("Unknown rank by: \"%v\"", rankBy))
	}
}
func parseLocation(location string, r *maps.NearbySearchRequest) {
	if location != "" {
		l, err := maps.ParseLatLng(location)
		check(err)
		r.Location = &l
	}
}
func parsePlaceType(placeType string, r *maps.NearbySearchRequest) {
	if placeType != "" {
		t, err := maps.ParsePlaceType(placeType)
		if err != nil {
			usageAndExit(fmt.Sprintf("Unknown place type \"%v\"", placeType))
		}

		r.Type = t
	}
}